package com.heima.wemedia.service.impl;

import com.alibaba.fastjson.JSONArray;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.heima.apis.article.IArticleClient;
import com.heima.common.aliyun.GreenImageScan;
import com.heima.common.aliyun.GreenTextScan;
import com.heima.common.tess4j.Tess4jClient;
import com.heima.file.service.FileStorageService;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.pojos.WmChannel;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmSensitive;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.common.SensitiveWordUtil;
import com.heima.wemedia.mapper.WmChannelMapper;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.mapper.WmSensitiveMapper;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmNewsAutoScanService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.util.*;
import java.util.stream.Collectors;


@Slf4j
@Service
@Transactional
public class WmNewsAutoScanServiceImpl implements WmNewsAutoScanService {

    @Autowired
    private WmNewsMapper wmNewsMapper;

    /**
     * 自媒体文章审核
     * @param id 自媒体文章id
     */
    @Override
    @Async //标明当前方法是个异步方法
    public void autoScanWmNews(Integer id) {

        System.out.println(id);
        //1 查询自媒体文章
        WmNews wmNews = wmNewsMapper.selectById(id);
        if(wmNews == null){
            throw new RuntimeException("WmNewsAutoScanServiceImpl--文章不存在");
        }

        //从查询的内容中提取纯文本内容和图片
        Map<String,Object> textAndImages = handleTextAndImages(wmNews);

        //字管理敏感词过滤
        boolean isSensitive = handlSensitiveScan((String) textAndImages.get("content"),wmNews);
        if(!isSensitive) return;

        if(wmNews.getStatus().equals(WmNews.Status.SUBMIT.getCode())){

            //2 审核文本内容
            boolean isTextScan = handleTextScan((String) textAndImages.get("content"),wmNews);
            if(!isTextScan){
                return;
            }

            //3 审核图片
            boolean isImageScan = handleImageScan((List<String>) textAndImages.get("images"),wmNews);
            if(!isImageScan){
                return;
            }

            //4 审核成功，保存app端的相关文章数据
            ResponseResult responseResult = saveAppArticle(wmNews);
            if(!responseResult.getCode().equals(200)){
                System.out.println(responseResult.getErrorMessage()+responseResult.getCode());
                throw new RuntimeException("WmNewsAutoScanServiceImpl-文章审核，保存app端相关数据失败");
            }
            //回填article_id
            wmNews.setArticleId((Long) responseResult.getData());
            updateWmNews(wmNews, (short) 9,"审核成功");
        }

    }

    @Autowired
    private WmSensitiveMapper wmSensitiveMapper;

    /**
     * 自管理敏感词审核
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handlSensitiveScan(String content, WmNews wmNews) {

        boolean flag = true;

        //获取所有敏感词
        List<WmSensitive> wmSensitives = wmSensitiveMapper.selectList(Wrappers.<WmSensitive>lambdaQuery().select(WmSensitive::getSensitives));
        List<String> sensitiveList = wmSensitives.stream().map(WmSensitive::getSensitives).collect(Collectors.toList());


        //初始化敏感词库
        SensitiveWordUtil.initMap(sensitiveList);

        //查看文章中是否有敏感词
        Map<String,Integer> map = SensitiveWordUtil.matchWords(content);
        if(map.size()>0){
            updateWmNews(wmNews, (short) 2,"当前文章存在违规内容"+map);
            flag = false;
        }

        return flag;
    }


    @Autowired
    private IArticleClient iArticleClient;

    @Autowired
    private WmChannelMapper wmChannelMapper;

    @Autowired
    private WmUserMapper wmUserMapper;

    /**
     * 保存app端的文章数据
     *
     * @param wmNews
     * @return
     */
    public ResponseResult saveAppArticle(WmNews wmNews) {
        if(wmNews ==null){
            System.out.println("wmnew为null--saveAppArticle");
        }

        ArticleDto dto = new ArticleDto();

        //属性拷贝
        BeanUtils.copyProperties(wmNews,dto);
        //文章布局
        dto.setLayout(wmNews.getType());
        //频道
        WmChannel wmChannel = wmChannelMapper.selectById(wmNews.getChannelId());
        if(wmChannel != null){
            dto.setChannelName(wmChannel.getName());
        }
        //作者
        dto.setAuthorId(wmNews.getUserId().longValue());
        WmUser wmUser = wmUserMapper.selectById(wmNews.getUserId());
        if(wmUser != null){
            dto.setAuthorName(wmUser.getName());
        }
        //文章id
        if(wmNews.getArticleId() != null){
            dto.setId(wmNews.getArticleId());
        }
        dto.setCreatedTime(new Date());

        ResponseResult responseResult = iArticleClient.saveArticle(dto);
        return responseResult;
    }

    @Autowired
    private GreenTextScan greenTextScan;

    @Autowired
    private GreenImageScan greenImageScan;

    @Autowired
    private FileStorageService fileStorageService;

    @Autowired
    private Tess4jClient tess4jClient;

    /**
     * 审核图片
     * @param images
     * @param wmNews
     * @return
     */
    private boolean handleImageScan(List<String> images, WmNews wmNews) {

        boolean flag = false;
        if(images == null || images.size() ==0){
            return true;
        }
        //下载图片 minio
        //图片去重
        images = images.stream().distinct().collect(Collectors.toList());

        List<byte[]> imageList =new ArrayList<>();

        try {

            for (String image : images) {
                byte[] bytes = fileStorageService.downLoadFile(image);

                ByteArrayInputStream in = new ByteArrayInputStream(bytes);
                BufferedImage bufferedImage = ImageIO.read(in);

                //图片识别
                String result = tess4jClient.doOCR(bufferedImage);
                //过滤文字
                boolean isSensitiveScan = handlSensitiveScan(result,wmNews);
                if(!isSensitiveScan){
                    return isSensitiveScan;
                }

                imageList.add(bytes);
            }
        }catch (Exception e){
            e.printStackTrace();
        }


        //审核图片
        try {
            Map map = greenImageScan.imageScan(imageList);
            if(map.get("suggestion").equals("pass")){
                flag = true;
            }
        } catch (Exception e) {
            flag = false;
            throw new RuntimeException(e);
        }

        return flag;
    }

    /**
     * 审核文本内容
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleTextScan(String content, WmNews wmNews) {

        boolean flag = true;

        if((wmNews.getTitle()+content).length() == 0){
            return flag;
        }

        try {
            Map map = greenTextScan.greeTextScan(wmNews.getTitle()+content);
            System.out.println(map);
            if(map != null){
                String confidenceStr = (String) map.get("confidence");
                if(confidenceStr != "null"){
                    float confidence = Float.parseFloat(confidenceStr);

                    //审核失败
                    if(confidence >=60.0){
                        flag = false;
                        updateWmNews(wmNews, (short) 2,"当前内容存在违规"+"-"+map.get("label"));
                    }

                    //不确定 需要人工审核
                    if(confidence >=30.0 && confidence < 60.0){
                        flag = false;
                        updateWmNews(wmNews, (short) 3,"当前内容存在不确定内容"+"-"+map.get("label"));
                    }
                }


            }
        } catch (Exception e) {
            flag = false;
            throw new RuntimeException(e);
        }
        return flag;
    }

    /**
     * 修改文章内容
     * @param wmNews
     */
    private void updateWmNews(WmNews wmNews,short i , String reason) {
        wmNews.setStatus(i);
        wmNews.setReason(reason);
        wmNewsMapper.updateById(wmNews);
    }

    /**
     * 1 从自媒体文章中提取文本和图片
     * 2 提取文章的封面图片
     * @param wmNews
     * @return
     */
    private Map<String, Object> handleTextAndImages(WmNews wmNews) {

        //存储文本内容
        StringBuilder stringBuilder = new StringBuilder();

        //存储图片路径
        List<String> images = new ArrayList<>();

        // 1 从自媒体文章的内容中提取文本和内容
        if(StringUtils.isNoneBlank(wmNews.getContent())){
            List<Map> maps = JSONArray.parseArray(wmNews.getContent(), Map.class);
            for (Map map : maps) {
                if(map.get("type").equals("text")){
                    stringBuilder.append(map.get("value"));

                }

                if(map.get("type").equals("image")){
                    images.add((String) map.get("value"));
                }
            }
        }
        //2 提取文章封面图片
        if(StringUtils.isNoneBlank(wmNews.getImages())){
            String[] split = wmNews.getImages().split(",");
            images.addAll(Arrays.asList(split));
        }

        Map<String,Object> resultMap = new HashMap<>();
        resultMap.put("content",stringBuilder.toString());
        resultMap.put("images",images);
        System.out.println(resultMap);
        return resultMap;
    }
}
